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Preparation method of thin composite nano-scale coating

A flake and nano technology, applied in the field of preparation of thin composite nano flake coatings, can solve the problems affecting the application of nano flake coatings, the coating cannot be made too thin, and the protective performance of the coatings is reduced, and achieves good lamination labyrinth effect, excellent adhesion and so on. The effect of focusing on and eliminating internal stress

Active Publication Date: 2020-06-09
江苏超途新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The current nano-coatings have no scale lamination effect and poor penetration resistance; second, they contain other non-nano fillers at the micron level, so the coating cannot be too thin
[0007] The prior invention patent ZL200510119141.6 "Preparation Method of Nano Flake Coatings" directly disperses nano scales in the base coating, which has the following defects: 1. Because the original base coating contains micron powder, the size of the micron powder (20 ~60 microns), the coating cannot be less than the thickness of the micron powder particle size; 2. Although the nano flakes have been treated, the nano scales were not added to the coating when the coating was prepared. Nano material dispersant, Anti-sedimentation agents and other additives compatible with nano scales provide better protection. Due to the high activity of nano scales, when the coating is stored, the aggregation and sedimentation of nano scales will occur, resulting in a decrease in the protective performance of the coating and affecting the nano scales. Application of flake coatings; 3. When preparing nano-scale coatings, no nano-material additives such as leveling agents and defoamers that are compatible with nano-scales are added. Bubbles and shrinkage cavities are prone to occur during use. When the coating is used, multiple passes are required. Coating, so as to eliminate the influence of air bubbles and shrinkage cavities, so it cannot be made into a thin coating; 4. Nano scales are made of a single material and have a single function

Method used

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Examples

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preparation example Construction

[0053] A preparation method of thin composite nano-scale coating, the preparation method is as follows:

[0054] (1) Choose resin base material, described resin base material comprises epoxy resin base material, epoxy phenolic resin base material, polyphenylene sulfide resin base material, polyurethane resin base material, polyfluorine resin base material, fluorocarbon One or more of resin base material, acrylic base material, chlorinated rubber base material, perchlorethylene base material, alkyd base material.

[0055] Composite nano-scale materials are selected, the composite nano-scales have a thickness of 1-40nm, and the size of the planar direction of the sheet is 0.2-50 μm; it is uniform, active, multi-functional, highly dispersed, fully chemically bonded with the compounding agent, The one-dimensional composite nano-scale material coated with a protective agent is not only an active filler of a paint, but also a modifier and a coupling agent.

[0056] Selection of add...

preparation Embodiment 1

[0134] In this example, nanoscale flakes composited with PTFE and graphene are prepared. The primary grinding uses a batch planetary ball mill, and the composite uses a continuous planetary ball mill. The main basic materials processed are 100 mesh PTFE powder and auxiliary basic materials. Multilayer graphene , the grinding ball is zirconia ball, the coupling agent, anti-settling agent, dispersant, protective agent and solvent are 3-(methacryloyloxy)propyltrimethoxysilane (KH-570), styrylphenol Polyoxyethylene ether, dimethylhydrochlorosilane, vinyl acetate, deionized water.

[0135] 1. Weigh 100g of the main base material PTFE, 50g of the auxiliary base material multilayer graphene, 3g of 3-(methacryloyloxy)propyltrimethoxysilane (KH-570), 3g of styrylphenol polyoxyethylene Vinyl ether 4.5g, vinyl acetate 3g, deionized water 60g.

[0136] 2. For the intermittent planetary ball mill, five specifications of zirconia balls are selected (13 / 16)"; (19 / 32)"; (3 / 8)"; (5 / 16)"; (7 / 3...

preparation Embodiment 2

[0142] In this example, iron and cobalt composite nanoscale flakes are prepared. The primary grinding uses an intermittent planetary ball mill, and the composite uses a continuous planetary ball mill. The main basic material processed is 200-mesh iron powder and the auxiliary basic material 300-mesh cobalt powder. The grinding balls are steel balls. The agent, protective agent and solvent were triethanolamine; sodium hexametaphosphate; deionized water.

[0143] 1. According to the main basic material iron powder 100g; the auxiliary basic material cobalt powder 100g; triethanolamine 10g; sodium hexametaphosphate 1g; water 200g for ingredients.

[0144] 2. For the intermittent planetary ball mill, five specifications of zirconia balls are selected (13 / 16)"; (19 / 32)"; (3 / 8)"; (5 / 16)"; (7 / 32) ". According to the volume of the ball mill work cylinder, the weights of various steel balls are (13 / 16)"350g; (19 / 32)"160g; (3 / 8)"110g; (5 / 16)"20g; (7 / 32) "20g.

[0145] 3. Put it into th...

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Abstract

The invention relates to a preparation method of a thin composite nano-scale coating. The preparation method comprises the following steps: selecting a resin base material, a composite nano-scale material and other assistants, putting the materials together, and mixing and dispersing by using mixing and dispersing equipment to form the composite nano-scale coating. The surface of the composite nano-scale is provided with high-activity dangling bonds, and can be coordinated with organic matters to form chemical bonding and chemical adsorption, so that the binding force between a filler and resin in the coating is greatly improved, and meanwhile, the binding force between coating resin molecules is also greatly improved.

Description

technical field [0001] The invention relates to a coating with a new composite nanoscale flake material as a filler, belonging to the field of coatings, in particular to a preparation method of a thin composite nanoscale coating. [0002] technical background [0003] Coatings are widely used in petrochemical industry, metallurgical industry, food industry, coal mining, marine industry, machinery industry, electric power industry and other fields. In the steel industry, the protection of various pipelines, flues, and desulfurization scrubbers can minimize the economic losses caused by steel corrosion; in the food industry, it can meet the requirements of equipment anticorrosion and pollution prevention at the same time; In the petroleum industry, it can be used as a special anti-corrosion and anti-fouling coating; in the household appliance industry, it can be used to solve anti-corrosion, anti-sticking, and so on. [0004] With the strengthening of environmental protection ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/08C09D7/62C09D7/65
CPCC08K2003/0881C08K2201/003C08L27/18C08L81/02C09D5/08C08K3/042C09D7/62C09D7/65
Inventor 白日忠陈景清张蕴杨献楠
Owner 江苏超途新材料科技有限公司
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